Question about EliteGroup V7.5A (K7SOM+ V7.5A) Motherboard

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I have a problem with my m/b k7som+ 7.5c. When I press the pwr button everything seems ok, all fans are working properly and I also hear the HDD spinning sound. However there is no POST beep or anything else. The monitor exits the sleep mode (the light turns on but nothing appears on the screen). How can I detect the problem?

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  • konstanti952 Mar 07, 2011

    I did all these suggestions (taking out peripherals and RAM, battery for one minute etc but nothing happened) The video card is on-board so I cannot replace it. I also tried another HDD but nothing. I cannot unplug the CPU because it is soldered on this m/b. However thank you all for your time and precious advises!!

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Hi Konstanti952,

When you started to turn on your computer and work ok and don't give any abnormal beeps (POST) into it. Motherboard works fine as well as components. You can actually test this by detaching your hard disk drive to motherboard. If system works and give display and it's simply looking for hard disk (Boot Failure). It must be your Hard Disk Drive spinning/singing problem. Normally, this hardware component doesn't give powerful sounds, of course you can hear them but in normal mode only unless your hard drive works overload or in full capacity. Sometimes, users may hear knocking or clicking sounds coming out from the hard disk in form of rhythmic sound that starts and stops at random time intervals. It could be the sign that the hard disk is getting old and might quit on you sooner or later. There are several causes of clicking/spinning sound of hard disk drive but most of them are mechanical nature, an electronic failure will usually fry the logic chips instantly, with no warning whatsoever. It is recommended to look for a warning either in the hard disk drive section of the BIOS or during the POST. You can enable SMART to be able to read your hard disk status by main board. If sound you hear is more like a grinding one, this could be the worst scenario. Backup your data immediately if you are still able to access data on the disk. And it might stop functioning anytime. Hard disk drive occasionally produces a spinning sound when it searches for a file which is heavily fragmented. This is caused by the spinning platters as the read-write heads zoom back and forth to access the different sectors where the data is stored. It is important to differentiate this spinning sound from the clicking sound. This spinning sound can be reduced by defragmenting your hard drive from time to time. Hope this helps you. Thanks

Posted on Mar 07, 2011

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Try reseating the RAM and test again. If a no go, check that the RAM is supported by your motherboard as there are some configurations of RAM that the motherboard may not support. If it is supported and you are still stuck, take out the CPU and then reseat that to ensure a fresh connection to the pins. Then turn the computer back on and test. If a no go, check if you changed any jumper pins on the motherboard. I suggest changing them back to the default configuration if you did.

If still no go, I would send the motherboard back or get it checked on if still in warranty.

Have a great day!

Posted on Mar 07, 2011

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Hello,

There are a few procedures you can possibly try before replacing components.

I HIGHLY recommend you unplug power while trying these steps

1) Unplug power and remove CMOS battery (usually a small silver circular battery) on motherboard for 1 minuted then reinstall battery and see if it boots up.

2) Re-seat all RAM memory chips. If it doesn't help, then try booting the system 1 memory chip at a time, to rule out a bad stick of RAM

3) If you have a separate video card (not onboard video) then try re-seating it

4) unplug both data and power cables to all internal components (hard drives, CD-Roms, Floppies, etc) and also internal cards and see if it boots. If it does then reconnect one device at a time til you find the culprit


That's pretty much all you can do without swapping out parts.

I hope this help and I wish you luck!!

Regards

Posted on Mar 07, 2011

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Posted on Jan 02, 2017

  • 101 Answers

SOURCE: Front panel connections

You can download the complete user manual in English from the manufacturer's website at this link:)

http://support.asus.com/download/download_item_4.aspx?product=1&model=P4B533&SLanguage=en-us&os=17

The front panel connector pinout is on page 2-33, or page 59 in the PDF file. You should have mor ethan enough information to make all the connections you need.

Posted on Jan 02, 2009

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